WO2005090642A3 - Aluminium electrowinning cells with non-carbon anodes - Google Patents

Aluminium electrowinning cells with non-carbon anodes Download PDF

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Publication number
WO2005090642A3
WO2005090642A3 PCT/IB2005/000788 IB2005000788W WO2005090642A3 WO 2005090642 A3 WO2005090642 A3 WO 2005090642A3 IB 2005000788 W IB2005000788 W IB 2005000788W WO 2005090642 A3 WO2005090642 A3 WO 2005090642A3
Authority
WO
WIPO (PCT)
Prior art keywords
weight
fluoride
electrolyte
aluminium
carbon anodes
Prior art date
Application number
PCT/IB2005/000788
Other languages
French (fr)
Other versions
WO2005090642A2 (en
Inventor
Thinh T Nguyen
Nora Vittorio De
Original Assignee
Moltech Invent Sa
Thinh T Nguyen
Nora Vittorio De
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Moltech Invent Sa, Thinh T Nguyen, Nora Vittorio De filed Critical Moltech Invent Sa
Priority to US10/591,635 priority Critical patent/US7740745B2/en
Priority to CA2557955A priority patent/CA2557955C/en
Priority to AU2005224454A priority patent/AU2005224454B2/en
Priority to EP05718283A priority patent/EP1763595A2/en
Priority to AU2005224455A priority patent/AU2005224455B2/en
Publication of WO2005090642A2 publication Critical patent/WO2005090642A2/en
Publication of WO2005090642A3 publication Critical patent/WO2005090642A3/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/18—Electrolytes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/12—Anodes

Abstract

A cell for electrowinning aluminium from alumina, comprises: a metal-based anode having an electrochemically active outer part comprising a layer that contains predominantly cobalt oxide CoO; and a fluoride-containing molten electrolyte in wich the active anode surface is immersed. The electrolyte is at a temperature below 950°C, in particular in the range from 910° to 940°C. The electrolyte consists of: 6.5 to 11 weight.% dissolved alumina; 35 to 44 weight% aluminium fluoride; 38 to 46 weight% sodium fluoride; 2 to 15 weight% potassium fluoride; 0 to 5 weight% calcium fluoride; and 0 to 5 weight% in total of one or more further constituents.
PCT/IB2005/000788 2004-03-18 2005-03-18 Aluminium electrowinning cells with non-carbon anodes WO2005090642A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US10/591,635 US7740745B2 (en) 2004-03-18 2005-03-18 Non-carbon anodes with active coatings
CA2557955A CA2557955C (en) 2004-03-18 2005-03-18 Aluminium electrowinning cells with non-carbon anodes
AU2005224454A AU2005224454B2 (en) 2004-03-18 2005-03-18 Non-carbon anodes with active coatings
EP05718283A EP1763595A2 (en) 2004-03-18 2005-03-18 Aluminium electrowinning cells with non-carbon anodes
AU2005224455A AU2005224455B2 (en) 2004-03-18 2005-03-18 Aluminium electrowinning cells with non-carbon anodes

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
IBPCT/IB2004/000886 2004-03-18
IB2004000886 2004-03-18
IB2004001416 2004-04-29
IBPCT/IB2004/001416 2004-04-29
IB2004001024 2004-05-07
IBPCT/IB2004/001024 2004-05-07

Publications (2)

Publication Number Publication Date
WO2005090642A2 WO2005090642A2 (en) 2005-09-29
WO2005090642A3 true WO2005090642A3 (en) 2006-04-06

Family

ID=34962730

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/IB2005/000788 WO2005090642A2 (en) 2004-03-18 2005-03-18 Aluminium electrowinning cells with non-carbon anodes
PCT/IB2005/000759 WO2005090641A2 (en) 2004-03-18 2005-03-18 Non-carbon anodes with active coatings

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/000759 WO2005090641A2 (en) 2004-03-18 2005-03-18 Non-carbon anodes with active coatings

Country Status (5)

Country Link
US (2) US7811425B2 (en)
EP (2) EP1763595A2 (en)
AU (2) AU2005224455B2 (en)
CA (2) CA2558969C (en)
WO (2) WO2005090642A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2381927T3 (en) * 2002-10-18 2012-06-01 Rio Tinto Alcan International Limited Aluminum electrolytic reduction cells with metal-based anodes.
US7846308B2 (en) * 2004-03-18 2010-12-07 Riotinto Alcan International Limited Non-carbon anodes
EP1763595A2 (en) * 2004-03-18 2007-03-21 MOLTECH Invent S.A. Aluminium electrowinning cells with non-carbon anodes
RU2374362C2 (en) * 2004-06-03 2009-11-27 Мольтех Инвент С.А. High-resistant running non-coal anodes for electrolytic receiving of aluminium
KR20110060926A (en) 2008-09-08 2011-06-08 리오 틴토 알칸 인터내셔널 리미티드 Metallic oxygen evolving anode operating at high current density for aluminium reduction cells
CN101935851B (en) * 2010-09-30 2012-03-28 中南大学 Current strengthening and efficient energy saving method of prebaked aluminium electrolysis cell
US10128543B2 (en) * 2013-07-08 2018-11-13 Eos Energy Storage, Llc Molten metal rechargeable electrochemical cell
RU2567429C1 (en) * 2013-07-09 2015-11-10 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Electrolyte for aluminium production by melts electrolysis
CN115925405A (en) * 2022-12-29 2023-04-07 西安锐磁电子科技有限公司 NiCuZn soft magnetic ferrite material with high magnetic permeability and high Curie temperature and preparation method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4956068A (en) * 1987-09-02 1990-09-11 Moltech Invent S.A. Non-consumable anode for molten salt electrolysis
WO2000011243A1 (en) * 1998-08-18 2000-03-02 Moltech Invent S.A. Bipolar cell for the production of aluminium with carbon cathodes
US6077415A (en) * 1998-07-30 2000-06-20 Moltech Invent S.A. Multi-layer non-carbon metal-based anodes for aluminum production cells and method
WO2001031091A1 (en) * 1999-10-27 2001-05-03 Alcoa Inc. Inert anode containing oxides of nickel, iron and cobalt useful for the electrolytic production of metals
WO2001042535A1 (en) * 1999-12-09 2001-06-14 Moltech Invent S.A. Aluminium electrowinning with metal-based anodes
US20010020590A1 (en) * 1999-07-30 2001-09-13 Jean-Jacques Duruz Cells for the electrowinning of aluminium having demensionally stable metal-based anodes
US20030196909A1 (en) * 2002-04-22 2003-10-23 S.Craig Bergsma Cu-ni-fe anodes having improved microstructure
WO2004035871A1 (en) * 2002-10-18 2004-04-29 Moltech Invent S.A. Aluminium electrowinning cells with metal-based anodes

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US3711382A (en) * 1970-06-04 1973-01-16 Ppg Industries Inc Bimetal spinel surfaced electrodes
US4042483A (en) * 1973-07-20 1977-08-16 Rhone-Progil Electrolysis cell electrode and method of preparation
US4142005A (en) * 1976-02-27 1979-02-27 The Dow Chemical Company Process for preparing an electrode for electrolytic cell having a coating of a single metal spinel, Co3 O4
US5248510A (en) * 1992-02-18 1993-09-28 Hughes Aircraft Company Cobalt oxide passivation of nickel battery electrode substrates
JP3612365B2 (en) * 1995-04-26 2005-01-19 クロリンエンジニアズ株式会社 Active cathode and method for producing the same
US6533909B2 (en) * 1999-08-17 2003-03-18 Moltech Invent S.A. Bipolar cell for the production of aluminium with carbon cathodes
US6913682B2 (en) * 2001-01-29 2005-07-05 Moltech Invent S.A. Cells for the electrowinning of aluminium having dimensionally stable metal-based anodes
US7846308B2 (en) * 2004-03-18 2010-12-07 Riotinto Alcan International Limited Non-carbon anodes
EP1763595A2 (en) * 2004-03-18 2007-03-21 MOLTECH Invent S.A. Aluminium electrowinning cells with non-carbon anodes
US20080041729A1 (en) * 2004-11-05 2008-02-21 Vittorio De Nora Aluminium Electrowinning With Enhanced Electrolyte Circulation

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4956068A (en) * 1987-09-02 1990-09-11 Moltech Invent S.A. Non-consumable anode for molten salt electrolysis
US6077415A (en) * 1998-07-30 2000-06-20 Moltech Invent S.A. Multi-layer non-carbon metal-based anodes for aluminum production cells and method
WO2000011243A1 (en) * 1998-08-18 2000-03-02 Moltech Invent S.A. Bipolar cell for the production of aluminium with carbon cathodes
US20010020590A1 (en) * 1999-07-30 2001-09-13 Jean-Jacques Duruz Cells for the electrowinning of aluminium having demensionally stable metal-based anodes
WO2001031091A1 (en) * 1999-10-27 2001-05-03 Alcoa Inc. Inert anode containing oxides of nickel, iron and cobalt useful for the electrolytic production of metals
WO2001042535A1 (en) * 1999-12-09 2001-06-14 Moltech Invent S.A. Aluminium electrowinning with metal-based anodes
US20030196909A1 (en) * 2002-04-22 2003-10-23 S.Craig Bergsma Cu-ni-fe anodes having improved microstructure
WO2004035871A1 (en) * 2002-10-18 2004-04-29 Moltech Invent S.A. Aluminium electrowinning cells with metal-based anodes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHERNOV R V: "Electrolytic silicon-aluminium alloy prodn. - from a melt contg. aluminium and silicon oxide(s) and sodium, potassium and aluminium fluoride(s)", 20 May 1977, DERWENT, XP002273274 *

Also Published As

Publication number Publication date
EP1797223A2 (en) 2007-06-20
US20070187232A1 (en) 2007-08-16
AU2005224455A1 (en) 2005-09-29
WO2005090641A2 (en) 2005-09-29
WO2005090642A2 (en) 2005-09-29
CA2557955C (en) 2012-10-09
US20070193878A1 (en) 2007-08-23
US7740745B2 (en) 2010-06-22
CA2557955A1 (en) 2005-09-29
US7811425B2 (en) 2010-10-12
EP1797223B1 (en) 2013-06-26
AU2005224454B2 (en) 2010-10-07
CA2558969C (en) 2012-05-15
AU2005224455B2 (en) 2010-05-13
EP1763595A2 (en) 2007-03-21
WO2005090641A3 (en) 2006-04-06
AU2005224454A1 (en) 2005-09-29
CA2558969A1 (en) 2005-09-29

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